I've been having a burning pain in my stomach for the past week. I've seen the GP twice so far, the first time they asked me to do a stool test for Helicobacter pylori and it came out negative also prescribed me Lansoprazole. Then when I went to see the GP again he told me to double the dose the Lansoprazole but I still have the pain and it gets worse sometimes after I eat. The pain is very unpredictable and annoying. The GP asked me to do a blood test and an ultra sound for my stomach next week. In the meantime I can't bare the pain much longer and I don't know what I should do by the time they figure out what's wrong with me. Any advise?